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RESEARCH ARTICLE  [Accepted]
DOI: https://doi.org/10.4491/eer.2017.012
Non-isothermal pyrolysis of cashew shell cake-bituminous coal blends
Yoon Hwa Park, Ho Young Park, Hyun Hee Kim, and Sang Bin Park
KEPRI, 105 Munji-Ro, Yuseong-Gu, Daejeon 34056, Republic of Korea
Corresponding Author: Ho Young Park ,Tel: +82-042-865-5641 , Fax: +82-042-865-5679, Email: hypark22@kepco.co.kr
Received: January 23, 2017;  Accepted: September 5, 2017.
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ABSTRACT
This paper describes the non-isothermal pyrolysis of cashew shell cake - bituminous coal blends. The blends exhibit two distinct stages in the thermogravimetric curves, which the first stage stems from cashew shell cake and the second one from the superposition of cashew shell cake and coal pyrolysis. The pyrolysis behavior of the blend was linearly proportional to the blending ratios. The overall behavior of the blends was evaluated in terms of the maximum rate of weight loss, characteristic temperatures, char yields, and the calculated and experimental thermogravimetric curves. The activation energies ranged up to 49 kJ/mol for the blends were obtained and used to evaluate the interaction in the blends. The present thermogravimetric study shows that there is no significant interaction between cashew shell cake and coal in the blends, and it was supported by the characteristic values which are linearly proportional to the weight percentages of cashew cake-shell in the blends. The no-interaction might be due to the fact that the main reaction zones are distinctively different for two constituents, so the additive rule is acceptable for describing pyrolysis behavior of the present blends.
Keywords: Cashew shell cake | Coal | Kinetics | Non-isothermal | Pyrolysis | TGA
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